Container-closure disk and the production and application thereof



Jan. 31, 1928. 1,657,950

W. L. WRIG HT CONTAINER CLOSURE DISK AND THE PRODUCTION AND APPLICATION THEREOF Filed May 19, 1926 nuzntoz W. QC. 77

Patented Jan. 31, 1928.

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NTLIBUB L. VIRIGHROF FULTON, NEVT YORK, .hSSIG-NQR TB QEWVEGO FALLS CORPORA- 'IION, OF FULTON, NEW YORK, A CDPIPORATIO'N 035 NEW YORK.

CONTAINER-CLOSURE AND THE PT/QD'UCTION AND ATIPLIGATIOH THEREOF.

Application filed May 19, 1926. Serial No. 110,272.

This invention relates to improvements in binder carrying fibrous material hood cap disks and the like and to the production and application thereof; and the objects and nature of the invention will be readily understood by those skilled in. the art in the light of the following explanations of the method involved and of the accompanying drawings that illustrate what I now believe to be the preferred mechanical expression or embodiment of my invention from among other forms, materials, arrangements and combinations within the spirit and scope thereof.

An object of the invention is to provide, produce and apply a paper or like fibrous material hood cap (and by the term hood cap I include hood cap disks or disks to be formed into skirted hood cap form on or over the container head or mouth) that carries, at least in its annular skirt, an exceed ingly strong binder of high melting point and quick cooling or setting properties, capable of rendering said skirt soft and mold able when highly heated for molding and contraction under the rim of a container head, and capable or causing said skirt to then quickly set to stiff permanent cap secur ing form under said rim, and imparting to said. skirt the quality of stripping or peeling from the glass bottle surface without leaving on such surface an objectionable bottle fouling deposit that is not readily removed therefrom by bottle washing methods employed in bottling establishments or dairies, and to enable said cap to be repeatedly reheated and subjected to heating for an al normal length of time without destroying or seriously deteriorating the holding or bind ing qualities of the binder or of the cap skirt, and to reduce to the minimum the cost of binder carrying hood caps.

"With these and other objects in view my invention is based on and involves the method of producing and of applying a hood cap disk having at least asecuring portion or band the fibrous material of which is internally provided with a solid structure or deposit constituting a binder and possessing the characteristics of sulphur and its equivalent or equivalents.

Referring to the accompanying drawings forming a part hereof:

Fig. l is an elevation of the head or mouth portion at a container, such as a glass mill? or other bottle having an exterior rim or annular enlargement, sealed or covered by a hood cap in accordance with my invention.

Fig. 2 shows the bottle head in elevation and the secured hood cap in section.

Fig. 3 is a detail elevation of a fibrous or paper material hood cap in accordance with my invention.

The drawings show the head or mouth portion of a container a, such as a glass milk bottle, having the exterior annular rim or enlargement that provides an annular downwardly facing abutment or shoulder Z1, contracting and mer ing into the container neck 0.

The hood cap that I happen to show as an example is composed officxible sheet paper. and I herein employ the term paper in a broad sense to cover and include all fibrous materials that are equivalents with in my invention, for hood cap purposes and that meet the requirements of my invention. The hood cap, that I happen to show, is composed of a single flexible fibrous material sheet of one thickness, and is in the form of a skirted disk preferably imperforate throughout. The hood cap is drawn by suitable dies to provide a central ele vated usually fiat circular top 1, the top surface of which is preferably of a character to receive and display suitable advertising or other legends or indicia applied thereto by printing, lithography or other process, and an annular preferably downwardly and outwardly flaring skirt 2 which can be longer or much shorter than shown. The skirt can be just long enough to contract and look under the rim or can be slightly longer to extend to or onto the bottle neck. The length of the skirt is not material provided it is of a length to insure a binder carrying securing portion to contract to rigid form under a rim or into a recess, for securing the cap on and covering the bottle mouth.

The dies in drawing the single ply paper sheet material intothe skirted form, gather or take up the surplus material by crimps,

gathers, tucks or otherwise extending longitudina-lly of the cap skirt, preferably in the form of overlapping tucks 4%, arranged in an annular series surrounding the shirt. The dies in shaping the skirt and tucks apparently tend to loosen, crush or break down the internal fibrous structure of the paper remote coating of sulphur, and the hood caps are then ready for distribution and use. The caps carrying the binder imprcgnums, do not stick or adhere together, even when nested. f 1

'Ihesecaps carrying the hard solidified binder in'ipregnunls, must be reheated at tho bottling plant to rein er the skirts soft and Inoldable preparatory to ap iilication of the caps to the containers and molding Gill the soft hot skirts to the bottle heads and con traction thereof under the bottle rims. by suitable clamping or molding heads. ll heu thus molded against the cold glass surfaces, the capskirts quicklycool and set to hard stiff cap securing form and condition.

When desired, the hood. caps thus secured, can be removed from the bottle heads by using the necessary force to tear or expand the contracted annular securing portions of the cap skirts. The securingportions of the cap skirts will strip or peel from the glass bottle surfaces without fouling the same and without leaving objectimiable binder de posits thereon even should the securing or impregnated portion of the skirt have slight- 1y adhering contact with the glass surface. The securing portion of the cap skirt is without sufficient exterior binder coating to leave an objectionable fouling deposit on the glass even should the binder be when sell of a sticky or adhesive-to-glass nature. The securing portion of the skirt in any event will strip or peel from the glass somewhat in the manner of surgical plaster.

At the plant while bottles are being hood capped, the hood caps of my invention to be i applied, are kept in a suitable oven or heating chamber wherein the caps are subjected to a temperature much higher than the melting point of the cap binder, and are taken from this oven and quickly applied. l l here sulphur alone constitutes the cap hinder, the caps to be applied are subjected to a temperature approximately up to but preferably not above about 315 F. but always are kept below the high temperatures at which sulphur ignites and at which sulphur changes in character and color, and the caps being thus prepared for application to the bottles, are not intended to be kept at this high temperature, even during temporary halts in the bottling and capping operations, for any extended length of time.

I have discovered that paper hood 'aps carrying binders consisting of sulphur impregnums, do not under repeated heat treatments lose their effective binding qualities by evaporation or otherwise and that the sulphur does not so spread in the paper as to and also has slow paper penetrating quailties which is desirable in preventing spread thereol onto the cap tops and in niaintailn ing the concentration of the binder in the annular securing portion of the skirt durin reheating oi the caps for applicetion.

While the drawings indicate by dotted or stippled surface ifi thc aimular still. hard securing portion of the cap that is l11lpregnated with sulphur preferably to the point of saturation forming what might be termed a still ring or frame of solidified sulphur and mass of fibers, yet l do not wish to limit my invention to any particular relative extent or location of said securing per-- tion as any other annularportion of the skirt or the entire skirt might be so in pregnated or even the entire cap;

Sulphur is an exceedingly plentiful and cheap product, even refined sulphur at pres ent sells for about three cents per pound, as compared with other desirable plastic bindere that I have heretofore used that run in cost from about twe11ty-live to fifty cents per pound. Furthermore sulphur renders the paper to which applied of a very desirable color, paper impregnated therewith even when hot is not object-ionably sticky and will strip or peel from glass when cold without objectionably fouling glass and metal surfaces, is very quick setting. is of high melting point and hard and of great tensile strength particularly when pernicated with and included within a fibrous mass, is not'materially vaporized. or reduced in strength by repeated melting or reheating, is odorless in the cold state as when employed with cold bottled products, and paper impregnated thereby is rendered wa ter resistant and is water-proofed thereby.

It is understood 01. course that the entire cap can be impregnated with the binder without departing from my invention.

What I claim is:

1. A paper material hood cap, the skirt of which carries a sulphur binder impregnum solidified within the fibrous mass of thepaper material and extending to the surfaces thereof and rendering the impregnated skirt of the cap hard water resistant, quick-sch ting, soft and moldable when heated above the melting point of the in'ipregnum, and avhen either hot or cold non-fouling on glass bottle surfaces and capable of peeling or stripping therefrom.

2. An annularly-skirted hood cap composed of sheet paper the annular skirt of which is interiorly provided with a sulphur binder impregnum combined with the in ternal fibrous mass of the paper sheet reir dering said binder carrying portion of the skirt capable of repeated heating to a temperature above the melting point of the binder without material loss of binding strength, said binder being of high-melting till point, quiclesetting, and said impregnated portion of the skirt being non-fouling on and capable of stripping or peeling from container surfaces.

3. An annularly skirted paper material hood cap carrying'a binder embodying sulphur permanently carried by and incorporated in the cap skirt and rendering said skirt moldable when highly heated and quick setting.

4.721 fibrousinaterial skirted hood cap provided with a binder COll'lPOLGCl of sulphur permanently iicorporated therein, in corn bin-ation with a container the head of which is formed with an exterior shoulder, said cap covering said head with the skirt thereof molded under said shoulder and to hard securing condition.

solidified Within and combined With tin 5. it fibrous aterial skirted hood cap, the

skirt of which is formed With an annular securing portion by the presence 0t sulphur ing said portion capable of peeling or strip ping from glass surfaces Without leaving fouling deposits thereon,-said portion being; hard and of substantial strength, quick-set- Water resistant, and capable of being earnt 1o softened for molding by repeated l'iigh heating.

8. A paper material anmilurly skirted hood cap carryng a solidified sulphur binder driven thereinto from the exterior thereof by continued heat substantially higher than the melting point of sulphur.

9.111 the method of producing hinder-- carrying paper material hood caps and closing containers thereby, those steps which consist in externally applying sulphur liq uelied by heat to a paper hood cap and maintaining: such cap at a temperature sub stantially if her than the me ling point of sulphur to drive the sulpluu' into the paper to form an in'ipregnrun therein, permitting the sulphur to set or solidiit'y therein by cooling then softening; the cap for molding by heating the same to a temperature above the sulphur melting point. then applying the soft hot cap to the container head and mold ing the same thereto, and then allowing the cap to set to rigid secured form.

10. In the production of binder carrying; f-rlzirted hood caps. those steps which consist in applying sulphur exteriorly to the cap skirt and maintaining the same under high temperature substantially higher than the sulphur melting' point until. the sulphur has been absorbed by and taken into the paper to set therein and form an imprcgnuin of SO- lidified sulphur.

In testimony whereof, l have hereunto set niy hand at Fulton, New York, this 18th day of May, 1926.

VVILBUR L. lVRIGl-IT.

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